Home / 127,940.06-176,588.94-87,171.62

Finding the Fourth Proportional to 127,940.06, 176,588.94 and 87,171.62

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Solution

The fourth proportional to 127,940.06, 176,588.94 and 87,171.62 is: 120,318.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,940.06 : 176,588.94 = 87,171.62 : x
  2. Step 2: Convert to fraction form
    127,940.06/176,588.94 = 87,171.62/x
  3. Step 3: Cross multiply
    127,940.06x = 176,588.94 × 87,171.62
  4. Step 4: Simplify right side
    127,940.06x = 15,393,543,973.88
  5. Step 5: Solve for x
    x = 15,393,543,973.88/127,940.06
  6. Step 6: Final answer
    x = 120,318.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.